I didn't do this for EVERY letter, but the first few AtoZ "expansions" had working booster packs of 15 cards, sorted like so: 11 commons (of 112 possibilities), 3 uncommons (of 117 possibilities) and 1 rare (of 107 possibilities). Which means that every time you refresh this page, you will get a different distribution of cards! Makes a nice palate cleanse before heading into the Encyclopedia's C's. Note that Enhanced By Inferno's Light would have been 5 special packs with set card lists, and B's Broken Links would have come in a 40-page box, so those cards aren't in the booster.
A card that promises a lot of Broken Links... THE ENTRIES: [16] Cassie [17] Cave Beyond Logic, A [18] Caves of Kahless [19] cellular regeneration and entertainment chamber [20] Centaur, USS NOTES: [16] The [SF] icon is the Science-Fiction icon which, Rules of Acquisition-like, finds itself on all the SF authors found in the Encyclopedia. Those that weren't produced back in the day, including Benny Russell, will show up in Broken Links. Cassie is the frontpiece for box P6. Source: "Far Beyond the Stars" [17] Gives changelings and Species 8472 the ability to use Nerve Pinches, among other things. The second function may allow you to download both cards at once. Source: "In the Flesh" [18] Right now, only the reporting ability can be used, but seeing as Day of Honor Program will only play on Klingon planets, this will make it more flexible. Source: "Day of Honor" [19] Since there's no way this invention would ever work, I've added the AU Door bit...